Builder mechanism for spinning-machines.



H. F. HAWKINS & M. L. STICKNEY.

BUILDER MECHANISM FOR SPINNING MACHINES.

APPLICATION FILED AUG- 14. 1916.

1,201,583. 4 Patented Oct. 17,1916.

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H.IF. HAWKINS & M. L. STICKNEY. I

BUILDER MECHANISM FOR SPINNING MACHINES. APPLICATION FILED AUG. 14. i916.

1,201,583; Patehted 0ct.17,19 16.

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Harry F HawKins of mechanism by which the spinnin UNITED STATES PATENT OFFICE.

HARRY F. HAWKINS AND MYRON L.- STIcKN'EY, OF MANcHE TE 'N W HAMPSHIRE,

ASSIGNORS TO DRAJPER COMPANY, OF HoPnn LE, MASSACHUSETTS, A CORPORA- TION or MAINE. I j

- BUILDER MECHANISM FOR SPINNING-MACHI III'I'ES.

Application filed August 14,

in Builder Mechanism for Spinning-Machines, of which the following description, in connection withthe accompanying draw-' ing, is a specification, like characters on the drawing representing like partsf This invention relates to improvements in builder mechanism for spinning machines and its special purpose is to provide a form machine may be adapted for winding di erent types of bobbins.

In that type of. bobbin provided with a "longitudinal slot in the barrel to receive a feeler it is desirable that a sufiicient amount of fillin be wound upon the baseofthe' bobbin eneath that portion of the slot through which the feeler operates to enable pick to be made with such an anchorage of the filling upon the base of the bobbin as will insure,the filling being caught by the usual temple thread cutter. This invention provides as in the case of our prior application Serial No. 69746filed January 3, 1916 for winding this type of bobbin with a primary winding c'omprlsing one or more short slow traverses of filling inwhich the first traverse is a downward traverse commencing at a point below the portion of the slot through which the feeler operates.

In winding other types of bobbins to cooperate with other types of feelers it is necessary to form a bunch or primary winding made up of apomparatively large number of short slow traverses and in which the bunch tapers off at each end.

It is the main object of this invention to provide for winding both of-these types of bobbins by a single mechanism which may be readily adjusted for either purpose. This materially increases the value of the spin ning frame and renders unnecessary theduplication of spinning frames in mills where both types of bobbins are used.

The invention also provides more specifically a multiplying mechanism by which Specification of Letters Patent.

1916. Serial No. 114,678.

plied beforethe primary cam is'thrown out of operatlon and the main or service windmg beglns." This multiplying mechanism with its adjustments enables any desired number of traverses to be given during the primary winding.

The invention also. more specifically provides a form of means for securing the actu ation of the pick motion during the period rlmary winding when the usual pick motion actuating means is out of range.

,fOther features of the invention and the nature thereof will more fullyappear from the following description and the accompanying drawings and will be pointed out in the annexed claims.

. A preferred embodiment of the invention is disclosed herein as applied to a usual type of ring spinning machine.

In the drawings, Figure 1 is a front view of a portion of a'spinning machine embodyingfour invention; Fig. 2 is a right hand end elevation partially in cross section howing the multiplier and adjacent parts; Fig.

Patented Oct. 17, 1916.- I

' the rotations of the primary cam are multi- 3is a detail view in plan showing the dog which retains the primary cam inoperative relation to the builder-arm; Fig. 4 is a detail view in elevation showing the dog which retains in operative relation the device to engage and operate the pick motion during the control of the builder-arm by the pritoward the' right, and a portion of the builder arm shownin dotted lines. The mechanism which is illustrated is tha of a familiar type of Spinning frame having a form of construction embodying the present invention applied thereto. As has been pointed .out one feature of the invention re sides in providing such a construction of mechanism that the apparatus may be employed as desired either on the one hand for winding a feeler slotted bobbin in such a manner as to leave the required amount of filling on; the bobbin after the action of the feeler has taken place, or on the other hand for'winding an ordinary bobbin with a suit-- able tapered bunch. Thus one spinning apparatus is rendered capable of --p.erforming both kinds of work. But it will be obvious that the. flexibility of use thus obtained somewhat complicates the construction so far asother features of the inventionare concerned. If, forexample the spinning frame were to'be used only for winding feeleislotted bobbins then the construction provided in our priorpatent above'referred to. would be sufficient while if the spinning frame were to be used only for winding or- "dinary bobbins with the desired tapered bunch then many of the features of construction embodying the invention mightjbe',

simplified. But as it is desirable that the apparatus shall be fitted for eitherof these two functions the construction illustrated is selected as the preferred embodiment of the invention.

In the construction as shown the appa- -.terweighted bell crank levers 10 pivoted at 11 in the brackets 12 depending from the underside of the ladder 2. The upright arms \13 of the bell crank levers are connected together by 'a rod 14 and the foremost of said arms-is connected tov a chain 15 which runs over an idler 16 to a drum 17 carried by the builder'arm 18. .The drum the primary traverse will be describedlater.v

1'} is rotated through the worm gear 19 and aworm upon the shaft .20 by. the usual ratchet 21 and pick pawl 22, the general operation, of which is of a well known type, and the means for operating which during The builder arm 18 may beof anyusual type such as a lever pivotally mounted at;

one end 23,-carrying the drum 17 and pick motio'n adjacent its opposite end, and pro-' vided intermediate its length with the laterally extending lug or follower 24 which;

is engaged and acted upon by thefbuilder actuating cams. Inasmuch as the follower is essentially a part, of the builder'arm the cams may be considered as operating directly .upon the builder arm.; p

)The builder arm actuating J mechanism illustrated comprises a bracket which for convenience is made in three sections having faces 25, 26 and 27 respecti vely, adapted to be secured both bolt and slot connections 28 to the underside of the ladder 2. The

bracket's'ection 25 is provided with down- Wardlyand rearwardly' extending arms29 and 30. Thearm 29 is provided with an extension-secured thereto by bolts 31 andis provided with a-boss 32which serves as one journal for the usual cam shaft 33, the'other journal being inthe frame 1. This shaft 33 is'continuously driven in the usual manner. Primary and auxiliary cams 34 and 35, re-

-spectively,'a"re rotatably mounted upon the cam shaft 33 and are so connected as by pins 36 as to rotate in unison and yet be capable of separation. The cam 35 is provided with a laterally extending sleeve 37 surrounding theshaft 33 and terminating in-a disk "38 providedwith the clutch face 39, and'upon the opposite side with thepositioning pins. 40 preferably corresponding in number to the lobes of the cam.

Rotation is transmitted to the-cam shaft by the clutch 41, having a clutch face 42 complementary to the clutch-face 39. This clutch 41 is provided with a laterally extending hub 43 and is slidably feathered on the shaft 33.' The hub 43 of the clutch is provided with an annular groove 44 en-' gaged by the forked or yoke shaped end 45 of a shipper. The faces 39 of the disk and 42 of the clutch are normally-maintained in contact by a helical --spring 46 surrounding the shaft 33 and bearing at oneend against the hub 43, and at the opposite end a ainst a collar 47, adjuetably secured on the shaft 33.

The shipper is provided with a hub 48 slidably mounted upon .a shaft 49which is journaled in the arms 29 and 30 of the bracket. The shipper isprovi ded intermediate of its forked end-rand hub with an ofi- 'set portion 50 in which is journaled an antifri'ction roller 51 adapted to be engaged by the face of a cam 52 upon the end of anarm '53 having a hub, 54 which is rigidly secured by the set screw 55 to the shaft49.

The shaft 49, s rotated through a foot leveri56 at the end of an" arm 57 having a hub 58 rigidly secured, by a set screw; 59 to the shaft '49 and. havinjgthe extension 60 provided with angularly disposed faces 61 and 62 adapted to engage the'studs 40 upon the disk 38 of the cam-sleeve 37. This sitioned in such a'manner that the initial winding upon the filling carrier will start at a predetermined position which in the case of the Winding ofa 'feeler slotted bobbin is such that the first movement of the *builder arm aflected by. the primary cam the bobbin. 9

will cause a downward traverse of yarn upon In the operation of this mechanism the depression of the footlever 56 serves to rock mechanism constitutes the cam releasing and setting mechanism whereby'the cams are pothe shaft 49 about its axis causing the cam 52 on the arm 53 to engage the anti-friction roll 51 of the shipper and to slide the shipper longitudinally of the shaft 49 and toward the left, viewing Fig. 6, thus disengaging the clutch 41 from the disk 38. Further movement of the foot lever 56 brings one of the inclined faces 61 or 62 into engagement with one of the pins rotating the disk 38 and with it the cams 34 and 35 until the other of the faces 61 or 62 engages another pin 40. These pins 40 are so disposed upon the disk 38 that when two pins are engaged bv the faces 61 and 62 the cams will 'be positioned relatively to the.

builder arm so that the initial movement of the cam will cause a downward movement of the lifter rail. But by setting the pins 40 in the proper angular relation to the disk 38 the cams may be positioned relatively to the builder arm to begin the traverse at any required point.

When the cams have been set in the manner thus described the foot lever 56 is released and the spring 46 forces the clutch 41 into normal position causing the engagement of its face 42 with the face 39 of the disk 38 so that the cam will commence its actuation of the builder arm from the predetermnied point at which the cam is set.

During the primary winding the builder arm is actuated by the primary traverse cam 34, the. lobes of which it will be noted have a considerably less pitch than those of the secondary cam 35 so that when the primary 1 cam 34 actuates the builder arm a comparatively short and slow traverse of winding upon the bobbin is effected. Y

The period during which the primary traverse cam shall actuate the builder arm depends upon the desired character of the traverse winding. When a feeler slotted bobbin is being woundsuch actuation is re quired only for a sufficient. period to lay upon the bobbin enough yarn to produce a full pick across the loom with a slight excess to provide such an anchorage upon the base of the bobbin as will insure the yarn being caught by the usual temple thread cutter, and so insure that the end will not curl upwithin the shed. When an ordinary bobbin is to be wound with a bunch such actuation 'is required for a sufiicient period to build the bunch to the required size in-' volving a considerable number of traverses. I This invention presents a construction, a preferred form of which is lllustrated hereln,

in which either of theseprimary windings may be secured,- in which the traverse may begin at any desired point, and in which the number of traverses may be varied as required. The upper limit of the number of such primary traverses is in the specific construction illustrated sixty-four, but the prinbuilder arm and for substituting therefor the secondary traverse cam 35 which oper-' ates to lay the main or service winding.

This is accomplished in the construction.

illustrated by providing means operable at a predetermined time to shift the primary cam axially of the cam shaft 33 at the completion of the primary winding leaving the secondary cam in operative contact with the builder arm. In this construction spring actuated means are employed which normally act to move the primary cam 34 axially of the shaft 33 out of cooperative relation to the builder arm. The action of this spring actuated means is controlled by a trip mechanism which in turn is shown as controlled from the cam itself. If, however, the primary cam acted directly to con-' trol the trip mechanism constructional requirements would place a limit upon the number of primary traverses that could be laid before the actuation of the trip mechanism.

This invention as one feature introduces a multiplier or multiplying mechanism which transmits the actionof the primary cam to the trip mechanism and thus enables any I required number of primary traverses to be laid and still permits the number to be determined by the action of the primary cam itself. The introduction of this multiplier or multiplying mechanism renders the apparatus extremely flexible as to the size of the primary'winding and enables it to range from the simple downward and upward traverse required in a feeler slotted bobbin to be used in a narrow loom up to as large a bunch as may be required in the winding of any'bobbin for use in automatic filling replenishing looms.

The spring actuated means normally acting to move the primary cam out of cotiperative relation with the builder arm comprises a rod 63- mounted to slide longitudinally in the arms 29 and 30 of the bracket 25 and provided with a helical spring 64 mounted upon the rod abutting at one end against the arm 29 and at the other end against a collar 65 adjustably secured to the rod whereby the rod is normally projected toward the right, viewing Fig. 6. At the end opposite from the spring the rod 63 is forked at 66 and pivoted at 67 to a lever 68.

' This lever is pivotally mounted upon a stud 71 entering the annular groove 72 of the'hub 73 which projects laterally from the primary cam 34. The normal action of the spring 64 through the parts thus described is therefore to force the primary cam away from the secondary cam out of contact with the builder arm and into the position shown, for

example, in dotted lines in Fig. 6.

As the primary cam 34 is used in laying the first or primary winding, means are provided operable concurrently with the cam setting mechanismto positionthe primary cam 34 in operative relation to the builder arm. For this purpose as illustrated the shipper is provided with an extension 74 and a bifurcated end 75 embracing the rod 63 adjacent the collar 65 so that as the I shipper is moved laterally toward the left,

viewing Fig. 6, by the depression of the foot lever 56 the bifurcated end 75 will engage the collar 65 and force the rod ,63 to the left, thus oscillating the leverv 68 about its pivot and forcing the primary cam 34 firmly against the secondary cam 35. The primary cam is locked in this position in which it is 'in coiiperative relation with the builder 4 arm by a latch 76 having a hub 77 journaled' on a pin or shaft 78 secured to and projectlng laterally from the arm 30' of the bracket 25. A counterweight 79 acts normally-to swing the lower end of the latch toward the rod 63. and into engagement with a dog 80 projecting laterally from a collar 81 ad-- justably securedto the rod 63. This dog 80 has its face beveled toward the left, viewing Fig. 6. When, therefore, in the setting and positioning operation the rod '63 is moved toward the left toposition the primary cam 34 the beveled face of the dog 80 pushes back the latch 76, and when the required position is reached the latch 76 drops by gravity behind the dog 80 thus locking.

the rod in position.

The tripplng mechanism of which the latch isa part is operated from the primary cam so that at the conclusion of a predetermined extent of; primary winding the primary cam will operate the tripping mechanism which will then release, the spring actuated rod 63 causing it tomove theprimary cam out of coiiperation with the builder arm, and as will appear, bring the secondary cam into coiiperative relation with the builder arm and nitiate the main or service winding. But as has been pointed out, in order to increase the amount of the 'plier comprises a ratchet wheel 84 and a the web of the secondary cam 35, which preferably is a skeletonized structure. The pins 87 are conveniently provided with integral collars 89 near their bases adapted to rest against the inner surface of the cam 34 and the stems of the pins extend through slots 90 in the cam, and are firmly secured to the cam by nuts 91. The pins 87 may thus be adjusted longitudinally of the slots 90 so as to strike the ratchet teeth 86 at the required position in the rotation of the cams.

The number of lobes of the cams may be varied but structural limitations render four lobes, as indicated, a desirable number. There may be a pin 87 for each lobe or any lesser number may be employed. As each pin during 'the'rotation of the cams comes into the path of the multiplier it strikes one of the ratchet teeth 86 and moves the multiplier one step. According, therefore, to

pivoted latch 76 so that as a pin 93 is moved bythe rotation of themultiplier against the latch 76 the latch will be swung out of engagement with the dog 80 thus releasing the rod 63 to actuation by the spring 64. The number of pins inserted may vary from one to the full number. It will thus be seen that by varying the number of these pins andby varying the number of the pins 87 in the cam the latch may be operated to produce almost any number of traverses of primary winding up to the maximum number which would be produced by a single pin in each.

Overthrow or reverse rotation of the multiplier is prevented by a detent pawl 96 pivoted on the pin or shaft 78. .The engagement of the detent pawl 96 with the ratchet wheel and of the latch 76 with the dog 80 is further maintained against jar or vibration by a coiler contractilespring 97 connected at its ends to arms 98 and 99 upstanding respectively from the pawl and thelatch.

In order to provide for the release and removal of the primary cam 34 from its opera tive position at the conclusion of a downward traverse means are provided for that purwhich endof'the slot- 90: the pin 87 is set.

' By varying the number of pose. This is accomplished by providing the primary and secondary cams with coincidently curved surfaces adapted to engage the builder arm so that so long as these coincident surfaces are engaged the. weight of the builder arm and otherqn'echanism connected therewith will prevent the axial movement of the primary cam-34 upon the camshaft 35. Suitable depressions are made in the surface of the primary cam 34 to permit the shifting thereof at predetermined points. In the construction illustrated the primary cam 34 is provided with'lobes '100 having portions 101 coincident with like portions of the lobes 102 of the secondary cam 35. Slight depressions 103,104, 105 and 106 are provided in the surface of the cam 34 adjacent to the apices of the lobes 102 of the cam 35 so that when the apices ofthe cam 35 come into engagement with the builder arm, after the latch 76 is released from its engagement with the dog 80, the spring 64 will force over the lever 68 carrying with it the primary 'cam 34 out of operative relation to. the builder arm, whereby,

subsequent movement of the builder arm will be efl'ected through the secondary cam v alone.

The apparatus-is illustrated as set up for 'windingordinary bobbins with a bunch and also with the maximum number of windings permissible with this specific construe tionJ For that purpose one pin 87 is used in the cams and but one 93 inthe multiplier. In winding a'bunch it makes no difierence. at

pins 87 and the number of pins .93 any num er of traverses less than the maximum may be secured.

When it is desired to wind a feeler slotted bobbinthen the multiplier is filled with pins 93 and each slot 90 is provided-with a pin 87. The length of-the slot 90. is such'that'if the pin-87 is placed in theiforward end of the slot-. (in the' directiQn of travel) the.

' builder arm will be given an upward and downward. traverse, while if it be placed in the rearward end 'asimple'downward traverse willresult. For example (referring to- Fig. 7') if the pin 87 is set in the forward end of the ''slot as shownandmovement was I beginning with such an' angular position of the cam that pin 87 would be the next to,contact .with the multiplier pins 93, then the pin.87 would actuate the multiplier, and consequently' trip the latch ,7 6 before the depres sion .106 reached the follower, 24. Consequently when the depression 106 reached the follower 24 the follower would be elrgaged only by the lobe 102 of thesecondary cam and the spring 64 acting through the rod63 would forcethe primary ca'm out of operative relation to the builder arm. /If, however, the pin 87 were at the rearward end of the slot .90 it. would not operate the multiplier until after the depression 106 had passed the follower 24 so that the counterweights on the levers '10 wo'uld maintain the 1 follower upon the builder arm in contact with the primary camythus preventing the lateral shifting ofthe primary cam and causingit to actuate the builder arm until the depression 103is reached. Thus by adjustment of the pin 87 to one or the other ends of its slot the primary camwill actuate the builder arm to cause a'downward traverse ing of a bunch upon a regular bobbin it is necessary to insure that the desired taper shall be" given at each end of the bunch.

This tapering of the bunch is efi'ected in a well 'known manner by a step by step opera- 7 tlon of the winding mechanism to let 01f the chain 15 to effect thegain of the traverse, whereby the-ring rail rises a little higher on veach successive up stroke and descends not quiteso far on each successive down stroke.

oscillation of the builder arm whichever one The pick mechanism must be operated by the of the cams-34 and-35 is inaction, but when the primary cam 34 is acting the amplitude of oscillation of the builder arm is so small that .it is insu-fiicient to impart the requisite short stroke of the builder arm.

,The operation of the pick mechanism is I secured by the pickpawlfl22 being brought into contact with apawl actuator. The main pawl actuator is illustrated .as an arm 107 projecting down from andvertically adjustable at 108 in the. bracket 26. Upon the upstroke of the builder arinthe pawl'22 strikes againstthe lower end of the arm 107-and according to the vertical "adjustment of the arm .107 the .desired pick motion is given. Whenjhowever, the movement of the builder arm is slight, as when making the primary traverse, it is necessary in order.

.to secure ioperation of'the-pawl 22 to bring into play an auxiliary pawl actuator 109. This actuator 109 is shown asa similar arm vertically, adjustable at.- 110 in a head 111 pivoted at 112 to the bracket 26. The head -l11-is weighted, at 113 so that the auxiliary running 6K to the chain 15 to provide the:

proper gain, and accordingly, means are 5- provided in connection with this invention which act during the primary \winding to make up the deficiency in the gain, due to the pawl actuator 109 is swung thereby to the 'l of the pawl 22. The-rod 63is provided with now be clear.- When the primary cam 34:, '.is.th rown 'into operative position, by the movement of the rod 63 tothe left the dog 115 riding over the lug; 116 forces'the aux- I ,what we claim as new and desire a collar 114-carrying a beveled'dog 115 cooperating with a lug 1,16'exitending laterally from the-head 11 1 and so arranged thatv when'the. dog? is slid over the lug 116 the arm 109 will be swung back against the action of the weight 113 intoyertical position and-into contact with'astop lug 117 on the main pawl actuator 1107 v i r The operation of the pawl actuator will,

iliarypawl actuating arm 109 into vertical position 'andlocks iti there as shown in Figs.

- 2 and '7. 1. When atjthe completion of the I .Qprima-ry winding .ithe trip mechanism acts and the rod 63 "is'released'and moves to the right the dog .115 rides off-from the lug 111 and the-arm 109 swings underthe actuation of the weight 113out-of position and the. -main pawl actuatingarm 1 07 is left to effect the actuation ofthe pick motion.-

The general operation of the mechanism will alsobe' apparent from; the foregoing description. A slight depression of the foot lever 56 first operates to cause the cam 52 to movethe shipper 45. to the left (Fig. 6)

,. thus disengaging 'the clutch. Then thebifurcated end 75 of. the .shipper operates Qa'gainst the collar 65 and further depression of the foot leverfcausesthe rod 63 to move to the left and bring the primary cam 34 into operative position'as shown in full 1 lines in Fig. 6. At the same time the inclinedsurfaces' 61 and 62 engage'the posi- 'tioning stlids 40 on the disk 38 and thereby rotate theprimary and secondary cams to.

a starting point so that the initial movement to the builder arm under the influence I of the primary cam shall effect a short slow downward traverse. When the rod. 63

reaches the limit of its movement toward the left the latch 76 rides over and dropsbehind the dog 80 thus retaining the primary cam in operative position. At the same time the dog-115 rides 'up' onto the lug 116 swinging the auxiliary .pawl actuating arm 109 into operative position;- Upon the I release-of the lever 56 the spring '46 forces th'e 'clutch 4L1 into engagement with the-disk 38 and ."upon the starting of the. machine the camsrotata When. the pin or'. pins 8'3; in the cams have fcaused-the"; "operation of the multiplier in a manner'vdescribed and according to the particular adjustment the v latch 76 is tripped releasing. the 'irod 6.3- so of the builder; arm Zis in'engage nent with -64 the primary cam is immediately forced to the right and outof operative position.-

At the same'time the auxiliary pawl actuating arm 109 is released and swings out of operative position. 5

Having fully described; our invention, I to secure by Letters Patent is: v 1. Builder mechanism for spinning machines compri'sing a builder arm, a cam shaft, a 'primary. and ac'secondarytraverse cam mounted upon and rotated in unison by said shaft to actuate said builder arm, spring actuated means tending normally to move said primary traverse cam out of operative relation to said builder arm, a latch to maintain said pr mary traverse cam in operative relation to the builder arm, multiplying means for releasing said latch, means carried by'said primary traverse cam for actuating said multiplying means, whereby said latch may be released at a predetermined point in the first or a predetermined subse' quent rotat'ion of the said primary traverse cam. 4 v Y 2. Builder mechanism for spinning machines comprising a builder arm, a cam shaft,- a primary and a secondary traverse cam mounted upon and rotated in unison by saidshaft to. actuate said builder arm,

' spring act 'ated means tending'normally to 'that'the' spring 64 acts-to force the rod 63 move said primary traverse cam out of operative relation to said builder arm, a latch to maintain said primary traverse cam in operative relation to the builder arm, a rotary multiplier rotated-step by. step from said primary traversecam and provided with a" plurality of circumferentially disposed pin seats, one or more pins located in said seats as required with their path. of

rotation intersecting said latch whereby said latch may be released upon the completion of, a predetermined amount of vprimary winding. J

3. Builder mechanism for spinning ma chines comprising a builder-arm,' a pick rhotion carried by said builder arm, a cam shaft, a primary and a. secondary. traverse by said shaft to actuate said builder arm, spring" actuated means tending n rxnallyto fmove saidprimary traverse camo t of oper- -ative relation tosaid builder arm, a latch to h *maintain' said primary traverseca n in operan operat vesurface of the primary cam. 1ative relatiomto the; bnilderarm, multiply-c cam mounted upon. and rotated in unison ing means for releasing said latch, means carried by said primary traverse cam for actuating said multiplying means, whereby said latch may be released at a predetermined point in the first or a predetermined subsequent rotation of the said primary traverse cam, and, auxiliary means moved into and out of operative position upon the setting' and releasing respectively of said latch to engage and operate the pick motion during the control of the builder arm by the primary traverse 'cam. 4. Builder mechanism 'for spinning machines comprising a truilder arm, a pick mobuilder arm,a cam tion carried by said shaft, a primary and asecondary traverse cam mounted upon and rotated in unison by said shaft to actuate said builder arm, spring actuated means tending normally to move said primary traverse cam out of operative relation to said builder arm, a latch to maintain said primary traverse cam in operative relation to the .builder arm, a rotary mult1- plier rotated step. by step from said primary traverse cam and provided with a plurality of circumferentially disposed pin seats, one

or more pins located in said seats as rei quired with their path of rotation intersecting said latch whereby said latch may be released upon the completion of a predetermined amount of primary Winding, and auxiliary means moved into and out of operative position upon the setting and releasing respectively of said latch to engage and operate the pick motion during the control ofthe builder arm by the primary traverse .cam.

5. Builder mechanism for spinning machines comprising a builder arm, a pick motion carried by the builder arm, means for actuating said builder arm to eflect a primary winding of short, slow traverse, means operable upon the completion ofone or more short slow primary traverses to actuate said builder arm to effect a service winding of relatively longer and more rapid traverse, auxiliary means moved into and 1 out of operative position with respect to the feeler portion of the slot or any kind of bobbin may be wound with a tapered bunch as desired.

6. Builder mechanism for spinning ma chmes comprising primary and secondary* traverse cams, means acting to force the primary cam out of operative position, a latch for holding said primary cam in operative position, a rotary multiplier mounted adjacent said latch and given; a step by step rotation fromsaid primary cam, a plurality of 'circumferentially disposed pin"- 4 seatsin said multiplier, pins located in said seats with theirpath of rotation intersect-- ing-said latch whereby according to the number ofpins' inserted in the pin seats the timing of the releasing of the latch and consequently of. thej'period ofoperation of the 'saidprlmary cam may be determined.

.7. Builder mechanism for spinning machines comprising primary and secondary,

sov

traverse cams, means acting to force they primaryv cam 'out of'operative position, a

pick motion, an auxiliary pick motion'actu- 0.1, means for forcing said actuator out of operative position, a latch for holding said primary cam in operative position andsaid auxiliary actuator in operative position, arotary multiplier mounted adjacent-said latch and given a step by step rotation from said primary cam, a plurality of circumferentially disposed pin seats in said multiplier, l

pins located in said seats-with their path of rotation intersecting said latch whereby according to the number of pins inserted in the pin seats the timing of the releasing of the latch and consequently of the period of operation of the said prlmary cam and of said auxiliary actuator may be determined.

8. Builder mechanism for spinning machines comprising primary and secondary traverse cams, a spring actuated sliding rodfor forcing the primary cam out of operative position, a pick motion, an auxiliary pick motion actuating pivoted arm normally swung out of operative position, a pivoted latch,adog carried by said rod cooperating with said latch, a second dog carried by said rod cooperating with said auxiliary pick motion actuating arm, whereby when the rod is retracted against its spning to bring the primary cam into operative position the first dog will be engaged by the latch to lock the rod and the second dogwill engage the auxiliarypick motion actuating arm and move it into and lock it in operative position, and

means for releasing the latch actuated from the primary cam.

9. Builder mechanism for spinning machines comprising primary and secondary traverse cams, aspring actuated sliding rod for forcing the primary cam out of operative position, a pick motion, an auxiliary pick motion actuating pivoted arm normally swung out of operative position, a pivoted latch, a dog carried by said rod cooperating with said latch, asecond dog carried by said rod cooperating with said'auxiliary pick motion actuating arm whereby when the rod is I rod and the second dog will engage the aux iliary pick motion actuating arm and move it into and lock it in operative position, a

rotary multiplier for. releasing the latch, said multiplier rotated stepby step from the primary cam and provided'with a plurality v of circumferentially disposed pin seats, one

or more plns located in said'seats as required With-their path of rotation intersecting said latch vi'hereby saidlatchmay be re- -.leased bythe primary cam at a predetermined time.-

names to this specification j HARRY] FM Hawkins. MYRoN;L,1;S,-TIGKNEY.

'.In testimony whereof, we havelslgned our 

